The brilliant minds at MIT’s Mediated Matter Group have released a hypnotizing new video of their latest invention: a 3D printer that uses molten glass as its medium. Created in collaboration with MIT’s Glass Lab, the Glass 3D Printer (G3DP) contains a 1900°F “kiln cartridge” that fires the substance into a malleable state. It’s then laid down in gooey, crystal-clear layers, akin to what glue guns produce. MIT used the machine to create several different shapes, each marvelous in their own right, to display the flexibility of the G3DP.